I have already completed the IRS in my car. I was just curious how any of the IRS PT cars were doing on track. I went with an IRS primarily to lower the rear roll center in an attempt to better "balance" the car with respect to front and rear roll angles under lateral g -- to make the rear of the car do more of the cornering work and to get better forward bite off a corner. Most of the new high performance stuff (Corvette, Viper, and even NASCAR) has taken this approach, using a lower roll center and stiffer rear springs and bars. You can also loosen or tighten the car at the track by changing the adjustable roll center. My car is not a Camaro -- it is an old previously straight axle Corvette, but the modifications are somewhat similar to what you have to do with a Camaro. I went with a highly modified C4 approach -- C4 bearing carriers with longer, adjustable forward four link (to minimize C4 roll steer characteristics and to make the instant center and anti-dive/anti-squat adjustable, something you can't do with a C5/C6 set-up without moving the control arm pick-up points); adjustable lower lateral link for both camber and roll center adjustment; a vertically adjustable toe link to fine tune bump steer; a bullet proof Tom's differential with "1000 horsepower" Drive Shaft Shop aluminum half shafts; etc. The body is widened six inches for bigger tires and to keep from having to narrow the suspension which creates too many angles during travel and affects camber gain. The rear tires are 345s on 13 inch wide X 18 inch HRE wheels. The front is equally as modified -- Woodward front steer rack, ATS spindles, custom roller bearing control arms, etc. As Tyler said, we have been working on our cars a long time with the hopes the effort will be worth while. Like Tyler, my car will be streetable, but with a bias toward the track.
Pappy
|